Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Thanks for all your kind replies, Chaps!

Most of my show days, are seen by the "ordinary" public, at Papplewick Pumping Station.
 Most of them understand steam engines. But, often, they have never come across stirling cycle engines.

Many are very surprised, how rapidly the expand/ contract cycle  operates.
 This engine, with it's visible displacer, and 1200rpm should answer a few questions.......